parkinson



2 Sheets-Sheet 1. T. 82; G. M. PARKINSON. DUST COLLECTOR.

(No Model.)

Patented June 20, 1893.

(No Model.) 2 Shets-Sheet 2.

T. a? G. M. PARKINSON. DUST COLLECTOR.

N0.-499,'799. Patentad June 20, 1893.

UNITED STATES PATENT OFFICE.

TOM PARKINSON AND GEORGE MARSDEN PARKINSON, OF DONGASTER,

. ENGLAND.

DUST-COLLECTO R.

SPECIFICATION forming part of Letters Patent No. 499,799, dated June 20,1893.

Application filed September 27, 1392. Serial No. 447,051. (No model.)Patented in England June 14, 1892, No. 11,187.

To all wh hm it may concern:

Be it known that we, ToM PARKINSON and GEORGE MARsDEN PARKINSON,subjects of the Queen of England, residing at Doncaster, England, haveinvented certain new and useful Improvements in Dnst-Collectors, (forwhich we have obtained Letters Patent of Great Britain, No. 11,187,dated June 14, 1892,) of which the following is a specification.

This invention is designed forthe purpose of removing from dust-ladenair the impurities or solid matters which it may contain and isparticularly applicable to apparatus used in the treatment of grainwhere an air blast or suction is employed for carrying ofi from thegrain the dust and similar light impurities which may be mixed with it.

In the accompanying drawingsz-Figure 1, is a horizontal sectional viewtaken on the line -00 of Fig. 2. Fig. 2, is a vertical longitudinalsectional elevation taken on the line 3 y-y of Fig. 1. Fig. 8 isavertical transverse section on the line zz, Figs. 1 and 2. Figs. 4, 5and 7, are horizontal sectional views taken about centrally of the dustarresting chamber, indicating slight changes in the general arrangement.Fig. 6, is a central vertical section, taken transversely on the linez-z, Fig. 5, the inlet for the air not being shown.

A represents the casing containing and closing in the apparatus intowhich a current of the air to be treated enters by the passage B eitherunder the influence of a blast or exhaust according to circumstances. Ifa blast be employed the top of the apparatus may be open as indicated inFig. 2 but if the apparatus is to work by suction'the top should besufficiently closed in and connected with an exhaust fan or blower aswill be well understood.

The air entering by the channel B passes between the S-shaped-plates 0preferably of metal which are arranged in vertical rows across thechamber L the course which the air has to travel being indicated by thearrows in Figs. 1 and2. In passing between the plates 0 the air partswith the dust and impurities previously carried with it and thesefalling .down the channels in the plates leave them I by their bottomedges and pass into thelower portion D of the chamber in the bottom ofwhich is located the worm or otherconveyer E by which the dust isremoved from the apparatus and delivered by the outlet F from which itmay be taken and dealt with in any required manner. The lower chamber Dhas tapering sides so as to direct the impurities on to the conveyor andit may be divided up into sections by the boards or partitions G ifdesired.

The air liberated from almost, if notquite,

thewhole of its impurities in passing by the plates 0 escapes by thepassages H to the upper or exit portion I of the apparatus where owingto the provision of the ample space it expandsand should it contain anyfurther dust or impurities it will deposit them upon the platform Kwhich forms the cover of the upper chamber L which contains the plates,

0. The platformK is provided with the walls M by which the materialisretained. In practice however it is found that the airis so thoroughlyrelieved of its impurities in passing the plates 0 that the platform Kis of very little practical utility and that any dust that may fall uponit is of such small quantity that it is almost unnecessary to provideany special means for removing it as it can at intervals be easilybrushed off when the apparatus is open. The construction shown,h0wever,is preferred.

The effect of the expansion of the air in the expansion space I may beincreased by making the channels H small in proportion to the rest ofthe apparatus, and this effect may be increased by providing the wings Oas shown in Fig. 2 which besides narrowing the channels H act as baffleplates for the air to strike against and still further tend to removefrom the air any impurities it may contain. These wings however need notnecessarily be employed but are preferred. The upper portions of thewalls A as shown in Fig. 2 may with advantage be curved round so as toextend over the edgeof the platform K and thus direct the air well overthat platform.

In the modified construction illustrated in Figs. 4, 5 and 6 the samemethod of operating is followed, but the arrangement of the parts isslightly altered. The dust-laden air enters the chamber L at B where itm eets a baffle plate Figs. 4 and 5 indicates the limit of the cover.

In Fig. 5 the plates 0 instead of being arranged across the path of thedust-laden air are placed parallel thereto and the course of the air isdiverted so as to pass between the plates as before. Otherwise theconstruction is similar to that of Fig. 4, the partitions P and baffleplates N being employed in a similar manner.

In the cross section Fig. 6 the boards or plates Q may be employed ifdesired to separate the dust deposited by the air before it has passedthe plate 0 and after it has so passed and if desired a completeseparation of the particles may be carried out by employing twoconveyers E one at the bottom as shown and the other at the junction ofthe plates Q.

The baffle plates N may if necessary be placed near to the entrance P soas to constrict the passage N between the partition P and the baffleplate thus compressing the air and intensifying the eifect of itsliberation into the relatively large chamber L. In Fig.

7 this is carried out, the arrangement of the' partitions and baflieplates being the same as in the previous figures, but the plates 0 areomitted and it is therefore desirable to place the baffie plates Verynear to the openings in the partitions.

In this specification the plates 0 have been described as being S-shapedand vertical and we prefer to place them vertically, but it will beappreciated that a similar result could be obtained with these plates orplates of other shape such as C-shape somewhat slanted or inclined solong as the falling of the dust was insured.

If it be found that from the nature of the dust it has a tendency toadhere to the plates it can be removed by periodical shaking or knockingor by .brushes if desired.

We claim- 1. In a dust collecting machine the combination of the upperchamber containing vertically arranged plates of substantially an S formin cross section, and an air inlet, air channels at each end of thechamber, and an expansion space above the chamber communicating withsaid channels, substantially as described.

2. In a dust collecting machine, the combination of two sets or seriesof vertically arranged curved separated plates with a space between themfor the entrance of air, an outer case affording passages for the exitof the air after passing around or through the plates and means forwithdrawing the dust or impurities precipitated from the air,substantially as described.

3. In apparatus such as described the combination with a chamber such asL containing one or more sets of curved vertical plates such as O of alower chamber such as D communi eating with the firstchamberanddividedby partitions corresponding with the rows of plates above and a worm orother conveyer substantially as described.

4. In a dust collecting machineethe combi- I nation of an outer casehaving inlet for the dust laden air, and a suitable outlet, an upper andlower chamber within said case, rows of curved plates arranged from topto bottom of said upper chamber, and means for conveying off the dustdeposited in the lower chamber, substantially as described.

5. In a dust collecting machine the combination of an outer case havinginlet for the dust laden air and a suitable-outlet, an upper chamberhaving from top to bottom thereof a series of curved separated platesforming continuous circuitous channels between them, a lower chambertapering at the sides, and a conveyer contained within said lowerchamber, substantially as described.

6. In a dust collecting machine, the combination of an outer case havingair inlet and having its sides contracted or turned partly over at thetop to form an outlet for the air, an upper and a lower chamber, aseries of curved separated plates in the upper chamber and a conveyer inthe said lower chamber, substantially as described.

.7. In a dust collecting machine the combination of an outer casinghaving an inlet, and a suitable outlet at the top, an upper chamberclosed to the said casing in the top and provided at said top withsuitable transverse wings, a lower chamber communicating with the upperchamber, curved separated plates arranged in said upper chamber and aconveyer located in said lower chamber, substantially as described.

8. In a dust collecting machine, the combination of an outer case havingair inletand provided at its top with suitable outlet, an upper chambercontained within said case, closed at the top and provided with sidewings O, escape passages for the air into which said wings project, alower chamber, curved separate plates arranged in the upper chamber anda conveyer in the lower chamber, sub stantially as described.

9. In a dust collecting machine, the combination of an outer case havingsuitable inlet and outlet for the air, an upper chamber thereof withrows of curved separated plates,

hands in the presence of the two subscribing partitions having spaces,and battle plates witnesses. arranged before said spaces, whichpartitions and baffle plates alternate in position Willlljlhe curvedplates, a l0wer cha1nber for receiving the dust, and a conveyer in saidlower chamber, substantially as described.

In testimony whereof we have hereto set our TOM PARKINSON. GEORGEMARSDEN PARKINSON.

WVitnesses:

W. H. SIMPSON, I. T. ELY.

